Well, first off, we have Romana regenerating because reasons. We see her trying on a number of bodies before settling on one that looks suspiciously like a woman the Doctor and her had met previously. Beyond that, the Movellans, which almost work, and which I would very much like to see return in the new series, because I think they could do a great job with them. To make matters worse, this story sets the stage for a recurring trope in the old series, which is that you can no longer have a Dalek story without having Davros. One might think this is a problem given that Davros died off several stories earlier and, in fact, seems to die at the end of every other one hes in. One would be mistaken. And speaking of Davros, the original actor, Michael Wisher, was unavailable for filming, and the (frankly superior) Terry Molly hadnt come along yet. So they had another guy named David Gooderson. Hes not bad in the role, but they clearly didnt want to bother to make a new mask for him, so he just looksodd.